Ex-girlfriend is a term used to refer to a guy’s former girlfriend with whom he was in a relationship that went kaput. The relationship with an ex-girlfriend might have ended because of several potent reasons. Once a relationship ends, the guy and the girl decide to part on mutual terms. The end of any relationship is difficult to bear for both the girl and the guy, especially if they were pretty serious for each other. Ex-girlfriend can no longer be treated as an acquaintance or a friend because being in touch with one’s ex-girlfriend might remind one of the times spent with her. You have to get over your ex-girlfriend as and when your relationship goes kaput. This is the only way you can move on and get over the memories of your past relationship. This is extremely important to be faithful to your present partner or girlfriend with whom you are in a relationship. Dane Cook had once remarked, “I am an observer, I like to watch people. I am into psychology and people - how they act and such. I can always get better. A lot of my ex-girlfriends don't think I'm funny.”